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// $Id: PhysListEmModelPai.cc,v 1.5 2007/08/02 12:01:53 vnivanch Exp $
// GEANT4 tag $Name:  $
//
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#include "PhysListEmModelPai.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#include "G4ComptonScattering.hh"
#include "G4GammaConversion.hh"
#include "G4PhotoElectricEffect.hh"

#include "G4MultipleScattering.hh"

#include "G4eIonisation.hh"
#include "G4PAIModel.hh"

#include "G4eBremsstrahlung.hh"
#include "G4eplusAnnihilation.hh"

#include "G4MuIonisation.hh"
#include "G4MuBremsstrahlung.hh"
#include "G4MuPairProduction.hh"

#include "G4hIonisation.hh"
#include "G4ionIonisation.hh"

#include "G4Region.hh"
#include "G4RegionStore.hh"

#include "G4Proton.hh"
#include "G4Electron.hh"


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PhysListEmModelPai::PhysListEmModelPai(const G4String& name)
   :  G4VPhysicsConstructor(name)
{}

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PhysListEmModelPai::~PhysListEmModelPai()
{}

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void PhysListEmModelPai::ConstructProcess()
{
  // Add standard EM Processes

  const G4RegionStore* theRegionStore = G4RegionStore::GetInstance();
  G4Region* gas = theRegionStore->GetRegion("VertexDetector");

  theParticleIterator->reset();

  while( (*theParticleIterator)() )
  {
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager     = particle->GetProcessManager();
    G4String particleName          = particle->GetParticleName();
     
    if (particleName == "gamma") 
    {     
      pmanager->AddDiscreteProcess(new G4PhotoElectricEffect);
      pmanager->AddDiscreteProcess(new G4ComptonScattering);
      pmanager->AddDiscreteProcess(new G4GammaConversion);
      
    } 
    else if (particleName == "e-") 
    { 
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);

      G4eIonisation* eion = new G4eIonisation();
      G4PAIModel*     pai = new G4PAIModel(particle,"PAIModel");
      eion->AddEmModel(0,pai,pai,gas);

      pmanager->AddProcess(eion,-1, 2, 2);
      pmanager->AddProcess(new G4eBremsstrahlung,-1,-1,3);
    } 
    else if (particleName == "e+") 
    {
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);

      G4eIonisation* epion = new G4eIonisation();
      G4PAIModel*     pai = new G4PAIModel(particle,"PAIModel");
      epion->AddEmModel(0,pai,pai,gas);

      pmanager->AddProcess(epion,        -1, 2,2);
      pmanager->AddProcess(new G4eBremsstrahlung,    -1,-1,3);
      pmanager->AddProcess(new G4eplusAnnihilation,   0,-1,4);
      
    } else if( particleName == "mu+" || 
               particleName == "mu-"    ) 
    {
      pmanager->AddProcess(new G4MultipleScattering,-1, 1,1);

      G4MuIonisation* muion = new G4MuIonisation();
      G4PAIModel*     pai   = new G4PAIModel(particle,"PAIModel");
      muion->AddEmModel(0,pai,pai,gas);

      pmanager->AddProcess(muion,      -1, 2, 2);
      pmanager->AddProcess(new G4MuBremsstrahlung,  -1,-1,3);
      pmanager->AddProcess(new G4MuPairProduction,  -1,-1,4);       	    
    } 
    else if (particleName == "GenericIon") 
    {
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
      pmanager->AddProcess(new G4ionIonisation,      -1, 2,2);

    } else if ( ( !particle->IsShortLived() )       &&
	      ( particle->GetPDGCharge() != 0.0 ) && 
	      ( particle->GetParticleName() != "chargedgeantino") ) 
    {

      pmanager->AddProcess(new G4MultipleScattering,-1,1,1);

      G4hIonisation* hion =     new G4hIonisation();
      G4PAIModel*     pai = new G4PAIModel(particle,"PAIModel");
      hion->AddEmModel(0,pai,pai,gas);

      pmanager->AddProcess(hion,       -1,2,2);
    }
  }
}

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